yourself feel unable to eliminate any of these malfunctions, please contact the customer service department or
your point of sales. Any repair beyond the scope specified below must only be performed by qualified staff.
Please bear in mind that all warranty claims will become void in the case of damage caused by inappropriate
repair attempts, and that we decline any liability for any ensuing damage.
MALFUNCTION
1. The pump is not discharging
any liquid, the motor is not
running.
2. The motor is running, but the
pump is not discharging any
liquid.
3. The pump stops after a short
time of operation because the
thermal motor protection feature
has triggered.
4. The pump cuts in and out too
frequently.
5. The pump does not reach the
desired pressure.
6. The pump does not cut out.
POSSIBLE CAUSE
1. No current.
2. Thermal motor protection feature has
triggered.
3. The capacitor is defective.
4. The motor shaft is jamming.
5. Wrong setting of the pressure switch.
1. The pump housing is not filled with liquid.
2. Air penetrates into the intake line.
3. Suction height and/or discharge height too
great.
1. The electrical supply does not correspond
to the information given on the type plate.
2. Pump or intake line are blocked by solids.
3. Liquid is too viscous.
4. Temperature of liquid or environment is
too high.
5. Pump is running dry.
1. The membrane of the pressure tank is
damaged.
2. Insufficient pressure in the pressure tank.
3. Air penetrates into the intake line.
4. Check valve (non-return valve) is jammed
or not tight .
1. Cut-out pressure set too low.
2. Air penetrates into the intake line.
1. Cut out pressure set too high.
2. Air penetrates into the intake line.
7
ELIMINATION
Please use a device complying with GS
(German technical supervisory authority) to
check for the presence of voltage (safety
information to be observed!). Please verify
the correct position of the plug.
2. Separate the pump from the electrical
mains, allow the system to cool down,
eliminate cause.
3. Please contact the customer service
department.
4. Check the cause, eliminate the reason for
the jamming of the pump.
5. Please contact the customer service
department.
1. Fill the pump housing with liquid (please
refer to "Putting into operation" section).
2. Check to make sure that:
a.) the connection points of the intake line are
tight;
b.) the inlet opening of the intake line
including the check valve (non-return valve)
are immersed into the liquids being
discharged;
c.) the check valve (non-return valve) with the
filter is tight and not jammed;
d.) no siphons (i.e. permanently liquid-filled
loops), kinks, counter-slopes or narrow spots
are present along the intake lines.
3. Change the arrangement of the installation
so that the suction height and/or discharge
height will not exceed the max. value.
1. Please use a device complying with GS
(German technical supervisory authority) to
check the voltage of the lines of the
connection cord (safety information to be
observed!).
2. Remove possible congestion.
3. Pump may not be suitable for this liquid. If
feasible, the liquid should be thinned.
4. Make sure that the temperature of the
liquid being pumped and the environment do
not exceed the max. admissible values.
5. Eliminate causes of dry-running.
1. Have the membrane or the entire pressure
tank replaced by qualified staff.
2. Use the tank valve to increase the
pressure until it reaches a value of 1.5 bar.
Before that, please open a consumer in the
pressure line (e.g. a faucet) to depressurise
the system.
3. Refer to section 2.2.
4. Eliminate the cause of blocking the check
valve (non-return valve) or replace it if
damaged.
1. Please contact the customer service
department.
2. Refer to section 2.2.
1. Please contact the customer service
department.
2. Refer to section 2.2.